Queries taking a very long time

Hi,
I'm using version 7.3.3. I do a lot of modification to some of the tables in my database. There's a table that I didn't
runvacuum on for a while and I ran some big queries on it. It was taking a long time so I aborted the query and tried
runninga vacuum on the table. It ran for around 48 hours before I aborted that. I decided to just drop the table and
re-createit since that seems like it would be the fastest thing. It's been running the drop table command for almost 24
hoursnow. Is there any way to speed this process up? Can I go into the data directory and delete some files?  
This is on a developmental database so losing some data isn't extremely critical but I would like to know what data I'm
losingif I lose data other than just the table. There hasn't been any activity on the database since I started trying
todrop the table.  Make your home warm and cozy this winter with tips from MSN House & Home.